There's an interesting article in the current Stereophile by Art Dudley about tightening things and deformation of structures etc. Of course, overtightening has always been anathema with mechanical reproduction systems.
Technics 1200G VTA Lock or unlock is the question?
I have found the the 1200G sounds better with the VTA lock not engaged. Has anyone else tried it? I am finding that certain tracking distortions on very hot tracks are virtually gone. Glad I tried this. I am sure the 1200GR would have the same results.